Abstract
As a major pillar industry of the national industrial economy, the automobile industry has been greatly affected by the increasingly strict requirements of environmental protection in recent years. With the constant promotion of new energy vehicles, further compression of costs and improved performance will enable enterprises to occupy a place in international competition. In terms of the belt material of automobile engines, HNBR and EPDM, which are better in performance, are gradually replacing the traditional CR to adapt to the more demanding working environment. Compared with HNBR, EPDM is cheaper. In this paper, the effects of carbon black N330 and nylon staple fiber and their dosage on the properties of EPDM wedge rubber were studied by orthogonal test method to find the best formula. Studies have shown that the nylon fiber content has a great influence on the physical properties of EPDM wedge rubber, and comes to the influence of carbon black N330 content. The interaction between them is not obvious. When the content of the nylon fiber is 5phr and the content of the carbon black is 65 phr, the rubber wear rate after vulcanization is 15.5%, and the storage modulus at 120°C is about 60% at room temperature, its strength, heat resistance and aging resistance are excellent.
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